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| 1 <!-- |
| 2 |
| 3 /* |
| 4 ** Copyright (c) 2012 The Khronos Group Inc. |
| 5 ** |
| 6 ** Permission is hereby granted, free of charge, to any person obtaining a |
| 7 ** copy of this software and/or associated documentation files (the |
| 8 ** "Materials"), to deal in the Materials without restriction, including |
| 9 ** without limitation the rights to use, copy, modify, merge, publish, |
| 10 ** distribute, sublicense, and/or sell copies of the Materials, and to |
| 11 ** permit persons to whom the Materials are furnished to do so, subject to |
| 12 ** the following conditions: |
| 13 ** |
| 14 ** The above copyright notice and this permission notice shall be included |
| 15 ** in all copies or substantial portions of the Materials. |
| 16 ** |
| 17 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 18 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 19 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 20 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 21 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 22 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 23 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
| 24 */ |
| 25 |
| 26 --> |
| 27 |
| 28 <!DOCTYPE html> |
| 29 <html> |
| 30 <head> |
| 31 <meta charset="utf-8"> |
| 32 <title>GLSL function nodes Test</title> |
| 33 <link rel="stylesheet" href="../../../resources/js-test-style.css"/> |
| 34 <link rel="stylesheet" href="../../resources/glsl-feature-tests.css"/> |
| 35 <script src="../../../resources/js-test-pre.js"></script> |
| 36 <script src="../../resources/webgl-test.js"> </script> |
| 37 <script src="../../resources/webgl-test-utils.js"> </script> |
| 38 |
| 39 <script id="vshaderFunction", type="x-shader/x-vertex"> |
| 40 attribute vec4 aPosition; |
| 41 varying vec4 vColor; |
| 42 |
| 43 float sign_emu(float value) { |
| 44 if (value == 0.0) return 0.0; |
| 45 return value > 0.0 ? 1.0 : -1.0; |
| 46 } |
| 47 |
| 48 void main() |
| 49 { |
| 50 gl_Position = aPosition; |
| 51 vec2 texcoord = vec2(aPosition.xy * 0.5 + vec2(0.5, 0.5)); |
| 52 vec4 color = vec4( |
| 53 texcoord, |
| 54 texcoord.x * texcoord.y, |
| 55 (1.0 - texcoord.x) * texcoord.y * 0.5 + 0.5); |
| 56 vColor = vec4( |
| 57 sign_emu(color.x * 2.0 - 1.0) * 0.5 + 0.5, |
| 58 sign_emu(color.y * 2.0 - 1.0) * 0.5 + 0.5, |
| 59 0, |
| 60 1); |
| 61 } |
| 62 </script> |
| 63 |
| 64 <script id="vshaderMacro", type="x-shader/x-vertex"> |
| 65 attribute vec4 aPosition; |
| 66 varying vec4 vColor; |
| 67 |
| 68 #define sign_emu(value) ((value) == 0.0 ? 0.0 : ((value) > 0.0 ? 1.0 : -1.0)) |
| 69 |
| 70 void main() |
| 71 { |
| 72 gl_Position = aPosition; |
| 73 vec2 texcoord = vec2(aPosition.xy * 0.5 + vec2(0.5, 0.5)); |
| 74 vec4 color = vec4( |
| 75 texcoord, |
| 76 texcoord.x * texcoord.y, |
| 77 (1.0 - texcoord.x) * texcoord.y * 0.5 + 0.5); |
| 78 vColor = vec4( |
| 79 sign_emu(color.x * 2.0 - 1.0) * 0.5 + 0.5, |
| 80 sign_emu(color.y * 2.0 - 1.0) * 0.5 + 0.5, |
| 81 0, |
| 82 1); |
| 83 } |
| 84 </script> |
| 85 |
| 86 <script id="fshader", type="x-shader/x-fragment"> |
| 87 #if defined(GL_ES) |
| 88 precision mediump float; |
| 89 #endif |
| 90 varying vec4 vColor; |
| 91 void main() |
| 92 { |
| 93 gl_FragColor = vColor; |
| 94 } |
| 95 </script> |
| 96 </head> |
| 97 <body> |
| 98 <canvas id="canvasFunction" width="50" height="50"></canvas> |
| 99 <canvas id="canvasMacro" width="50" height="50"></canvas> |
| 100 <div id="description">This tests against a Mac driver bug related to function ca
lls.</div> |
| 101 <div id="console"></div> |
| 102 <script> |
| 103 var width = 50; |
| 104 var height = 50; |
| 105 |
| 106 function drawAndRead(canvasID, vshaderID, buffer) |
| 107 { |
| 108 var gl = initWebGL(canvasID); |
| 109 var program = setupProgram(gl, vshaderID, "fshader", ["aPosition"]); |
| 110 var vertexObject = gl.createBuffer(); |
| 111 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| 112 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5,0, 0.5,
-0.5,0 ]), gl.STATIC_DRAW); |
| 113 gl.enableVertexAttribArray(0); |
| 114 gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0); |
| 115 |
| 116 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| 117 gl.drawArrays(gl.TRIANGLES, 0, 3); |
| 118 gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, buffer); |
| 119 if (gl.getError() != gl.NO_ERROR) |
| 120 return false; |
| 121 return true; |
| 122 } |
| 123 |
| 124 function compareRendering(buffer1, buffer2, tol) |
| 125 { |
| 126 for (var i = 0; i < width * height * 4; ++i) { |
| 127 if (Math.abs(buffer1[i] - buffer2[i]) > tol) |
| 128 return false; |
| 129 } |
| 130 return true; |
| 131 } |
| 132 |
| 133 function init() |
| 134 { |
| 135 if (window.initNonKhronosFramework) { |
| 136 window.initNonKhronosFramework(false); |
| 137 } |
| 138 |
| 139 description("tests function nodes"); |
| 140 |
| 141 var bufFunction = new Uint8Array(width * height * 4); |
| 142 var bufMacro = new Uint8Array(width * height * 4); |
| 143 |
| 144 if (drawAndRead("canvasFunction", "vshaderFunction", bufFunction) == false |
| |
| 145 drawAndRead("canvasMacro", "vshaderMacro", bufMacro) == false) { |
| 146 testFailed("Setup failed"); |
| 147 } else { |
| 148 if (compareRendering(bufFunction, bufMacro, 4) == false) |
| 149 testFailed("Rendering results are different"); |
| 150 else |
| 151 testPassed("Rendering results are the same"); |
| 152 } |
| 153 } |
| 154 |
| 155 init(); |
| 156 successfullyParsed = true; |
| 157 </script> |
| 158 <script src="../../../resources/js-test-post.js"></script> |
| 159 </body> |
| 160 </html> |
| 161 |
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Chromium Code Reviews
Issue 10399113:
Roll webgl conformance tests to r17874: part 2, adding r17874 (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/